package com.example._05weibo.base.filters;

import com.example._05weibo.pojo.vo.UserV0;
import lombok.extern.slf4j.Slf4j;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@Slf4j
@WebFilter(filterName = "logincheckfilter",urlPatterns ="/v1/weibo/*")
public class LoginCheckFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        log.debug("这是登陆状态的过滤器的初始化");
        Filter.super.init(filterConfig);
    }

    @Override
    public void destroy() {
        log.debug("这是过滤器的销毁过程");
        Filter.super.destroy();
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
         log.debug("进入登录状态校验的拦截方法");
         HttpServletRequest request = (HttpServletRequest) servletRequest;
         HttpServletResponse response = (HttpServletResponse) servletResponse;
         HttpSession session = request.getSession();
         UserV0 user = (UserV0) session.getAttribute("user");
         if(user==null){
             response.sendRedirect("/login.html");
         }
         else {
             filterChain.doFilter(request,response);
         }
    }
}
